linux-kernel - Re: [PATCH 2/2] blk-snap - snapshots and change-tracking for block devices

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Message-ID: <20201021090837.GA30282@duo.ucw.cz>
Date:   Wed, 21 Oct 2020 11:08:37 +0200
From:   Pavel Machek <pavel@....cz>
To:     Sergei Shtepa <sergei.shtepa@...am.com>
Cc:     axboe@...nel.dk, viro@...iv.linux.org.uk, hch@...radead.org,
        darrick.wong@...cle.com, linux-xfs@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, rjw@...ysocki.net,
        len.brown@...el.com, akpm@...ux-foundation.org,
        johannes.thumshirn@....com, ming.lei@...hat.com, jack@...e.cz,
        tj@...nel.org, gustavo@...eddedor.com, bvanassche@....org,
        osandov@...com, koct9i@...il.com, damien.lemoal@....com,
        steve@....org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: [PATCH 2/2] blk-snap - snapshots and change-tracking for block
 devices


We'll need some changelog here.

> Signed-off-by: Sergei Shtepa <sergei.shtepa@...am.com>


> --- /dev/null
> +++ b/drivers/block/blk-snap/blk-snap-ctl.h
> @@ -0,0 +1,190 @@
> +/* SPDX-License-Identifier: GPL-2.0-or-later */
> +#pragma once

once?

> +#define MODULE_NAME "blk-snap"
> +#define SNAP_IMAGE_NAME "blk-snap-image"
> +
> +#define SUCCESS 0
> +
> +#define MAX_TRACKING_DEVICE_COUNT 256
> +
> +#define BLK_SNAP 'V'
> +
> +#pragma pack(push, 1)
> +//////////////////////////////////////////////////////////////////////////
> +// version

This is not normal comment style.

> +#define BLK_SNAP_COMPATIBILITY_SNAPSTORE 0x0000000000000001ull /* rudiment */
> +//#define BLK_SNAP_COMPATIBILITY_BTRFS	 0x0000000000000002ull /* rudiment */
> +#define BLK_SNAP_COMPATIBILITY_MULTIDEV 0x0000000000000004ull

Don't comment out code.

Best regards,
								Pavel

-- 
http://www.livejournal.com/~pavelmachek

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